@article{SM_2012_203_8_a4,
     author = {T. A. Mel'nik and A. V. Popov},
     title = {Asymptotic analysis of boundary value and spectral problems in thin perforated regions with rapidly changing thickness and different limiting dimensions},
     journal = {Sbornik. Mathematics},
     pages = {1169--1195},
     publisher = {mathdoc},
     volume = {203},
     number = {8},
     year = {2012},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2012_203_8_a4/}
}